Pulverizing-mill.



A. J. GORE. PULVERIZING MILL.

APPLIOATIOH FILED JULY 6, 1909.

Patentd June 7, 1910.

4 BHEETBSHEET l.

A. J. GORE.

PULVBRIZING MILL.

APPLICATION FILED JULY 6, 1909.

960,893. 7 Patented June 7, 1910.

4 SHEETS-BEEF! 2.

A. J. GORE.

PULVERIZING MILL.

APPLICATION FILED JULY 6, 1909.

Patented June 7,1910.

4 SHEETS-SHEET 3.

Gum/mu wwwmoeo @ZJW J A w z ARVIN {TAKES GORE, OF DENVER, COLORADO.

PULvEaIz Nc-MILL.

Ipeoification of Letters Patent.

. Patented J une '7, 1910.

Application filed July 6, 1909; Serial no. 506246.

To all whom it may concern:

Be it known thatI, Anvm J. GORE, a citizen of the UnitedStates,-residing in the city and county of Denver and State'of'Colorado, have invented certain new and u'sefiutlmprovements inPulverizing-Mills; and I do declare the followin to be a full, clear;-and exact description 0 the invent-ion, such as will enable othersskilled in the art to which it appertains to make and use the same,reference being had to the accompanying drawings andto the letters andfi u'esof reference marked thereon, which orm a part of thisspecification.

. Mry invention relates to improvements in pulverizing mills, my objectbeing to provide a construction in which rock or quartz maybe reduced toany desired fineness.

The machine is more especially intended for use in pulverizing orecontaining precious or other metals, the required pulverization in thiscase being suflicient to release the metallic values contained therein.

In my improved construction, I employ a revolving mortar, in whichislocated a number of pulverizing. members, carried by a frame mounted torevolve in a direction opposite from the rotary movement of the'mortar.These pulverizing members are each mounted to slide horizontally upon aradial armor eye beam, connected with ahub of the rotary pulverizing'structure. Each puleach pulverizing: member is caused to move outwardly,bodily, upon its eye beam arm, under the influence of centri fngalforce. The individual disks of each member also are adapted. to moveoutwardly, independently of each other.

When the material to be crushed, is placed in the mortar, :and the tworotary members set 1n motion, the lower and heavier-disks are movedoutwardly with the necessary force'to reduce the coarse or'large plecesof rock to asuitable degree. The reduced rock or amorphous material,under the influence of the action of the machine, aided by spec1al= lowsor blades, is caused to move upwar ly, where it is successively actedupon by the various disks of each pulverizing member, the material as itworks upwardly, increasing in fineness. The upper disks,

therefore, move farther outwardly than the lower disks, since, thematerial when it reaches the top of the mortar and is acted upon by theuppermost disk, is reduced to the necessary or desired fineness, afterwhich provlslon is made for removing the pulverized material, by suctionor in any other suitable manner.

Having briefly outlined my improved construction, I will proceed todescribe the same in detail, reference being made to the accompanyingdrawing, in which is illustrated an embodiment thereof.

In this drawing: Figure 1 is a central, vertical section, taken throughmy improved pulverizing machine, the rotary pulverizing memberssuspended within the mortar, being shown in elevation. Fig. 2 is ahorizontal section taken approximately on the line 22 Fig. 1, lookingdownwardly, the parts bemg shown on, a larger scale. Fig. 3 is a detailview of a low equipped wlth a series of- .blades for e evating thematerial in the mortar during the operation of pulverizing; Flg. 415 anenlar ed, vertical section takenthrough one of tie pulverizing members,-illustrating the operation of the same, a fragment only of the mortarbeing illustrated. Fig. 5 is a vertical section of the various elementscomposing one of the disks ofa' pulverizing member. Fig. dis a top planView of one-of the disks of a: PlllVSl zing member, parts being brokenaway.- This view is shown onthe same scale as Fig; 5.

The same reference characters indicate the same parts in all the views.

Let the numeral 5 designate a mortar having a hub 6, a bottom 7 and anupwardly projecting, circular wall 8. To the top of the wall 8 issecured a frusto-conical housing 9. Above this housin is a stationarycone shaped member 10, w ich is secured to a suitable frame work 12.Within the stat-ionary member 10- is formed an opening 13, from whichleads a short pipe 14', communicating with a suction conduit 15, leadingto a fan 16, operated by a belt 17, which connects a pulley 18 with alarger pulley 19, fast on an operating shaft 20, equipped with a ulley21, which is connected by means 0 a belt 22 to the line shaft or motornot shown.

The hub 6 of the mortar is equipped with a beveled ear 21*, engaged by asmaller vertically d isposed similar gear 22, fast on the operatingshaft 20. Also mounted upon the shaft 20, is a smaller car 23, meshingwith a larger horizontally fisposed gear fast on a vertical shaft 25,the lower extremity of the shaft engaging 'a step box 20, while itsupper portion passes through the hub G of the mortar, its upperextremity protruding beyond the hub of the mortar and entering a socket27 formed in a hub member 28, to which is secured radially disposed eyebeam members 29, four of these members being shown. The socket 27 ispolygonal, preferably square, and the upper extremity of the shaft 25 isof counterpart shape, whereby as the shaft rotates, the hub member 28and its attachments are caused to travel therewith. Upon each of the eyebeam members 29, is mounted a sort of carriage 30, provided with upperand lower rollers 31, which engage the top and bottom flangesrespectively of the eye beaminember. To the lower extremity of thiscarriage is secured a depending stem 32 by means of bolts 33 or othersuit able fastening devices. The various disks comprising thepulverizing member are mounted upon this stem. As shown in the drawing,the lower three disks (see Fig. 4) are of the same thickness, while theupper four disks are of less thickness,'being approximately one-half ofthe thickness of the lower disks. All of the disks are substantially ofthe same construction and may therefore be designated by the samereference character, since they vary only in weight or thickness.

The various parts of which each disk is composed are illustrated in Fig.5 and consist of a circular body member 34, a tire member 35, a member36 for securing the body member to the tire and two cooperating innermembers 37 which einter the cen-- tral part of the member 34 and areopen to permit the entrance of the stem 32 upon which the disks aremounted, as heretofore explained.

In assembling the members of the disk, the tire is applied to the bodymember, the outer edge of the tire being beveled, as shown at 88, toengage a beveled face 39, formed on the inner surface of the tire. Thelocking member 36 also has a beveled face 40, engaging the oppositeinner beveled face 41 of the tire. When the two members 34 and 36 areapplied to the tire, the inner surface 42 of the member 36 engages ashoulder 43, formed on the body member and the two members 3-1- and 36are connected by screws 44. The inner surface of the body member, whichhas a central opening, is provided with a centrally locatedcircumferential tongue 45, which is engaged by flanges 46 formed on themembers 37. These members meet within the opening of the body member,and completely cover the inner face of the latter. They are composed ofsteel, or other suitable hard material, adapted to endure a great amountof wear. The tire 35 is also composed of steel, since great Wearingcapacity is required, on this part of the disk. It is evident that thebody member of each disk may be composed of cast iron or any suitablematerial, since the same is protect-.

ed both internally and exteriorly from the wear incident to the use ofthe pulvcrizing member. a

While I have described in detail a special construction of disk, it isevident that the invention is not limited thereto. Hence in thesubsequent description, the various parts or members of the disks willbe ignored and they will be referred to as if each were composed ofintegral pieces of material.

Each disk is provided with a central opening 47, through which the stem32 passes. This opening is considerably larger than the stem, allowingthe disks a predetermined lateral movement upon the stem, under theinfluence of centrifugal force. As illustrated in the drawing, theopenings of all of the disks are of the same size. The lateral movement,however, of each disk upon the stem is independent of its companiondisks ind is controlled by centrifugal force and by the action of thepulverized material. This is best illustrated by referring to Fig. 1-,in which the. position of the various disks of a pulverizing member issupposed to be the same as when the said member is in use.

As shown in the drawing, the inner part of the mortar is composed of aheavy steel ring 48, whose inner surface forms a pulverizing face,against which the material to be pulverized is carried by theperipheries or pulverizing faces of the various disks, of eachpulverizing member.

As shown in the drawing (see Fig. Kl), each pulverizing member, when theparts are assembled, is supported some distance above the bottom of themortar. The iaterial to be treated is fed into the mortar, and fallsupon a centrally located, distributing member 49, whose upper surface isconeshaped, the inclination from the apex of the cone, however, beingcomparatively slight. As the material is fed upon this member, it passesdownwardly in all directions and falls into the central part of thebottom of the mortar and between the various pulverizing members. Underthe action of centrifugal force, this material is carried out wardlyagainst the pulverizing ring 48, passing both underneath the pulverizingmembers and between them. Simultaneously with the outward movement ofthe material,

. wardly by centrifugal force, whereby the said disks are caused to actupon the material and crush "the same. The lower disks,

which are heaviest, act to crush and break up the material, whereby itisconsiderably reduced in size. After :having been acted on by any lowerdisk, it is caused to move upwardly into position to be acted on by thedisk next .above, and so on, the action of each disk further reducingthe size of the material, until after it has been acted on by theuppermost disk of the series of-each pulverizing member, it is reducedto the desired fineness. The centrifugal force may be sufficient tocause this material to travel upwardly, successively, into the planes ofthe various disks from the bottom to the top of the pulverizing members.However, in order that the material may be positively caused to travelupwardly from the bottom to the top of the. mortar, and successivelyinto the planes of the various disks, the frame work of the pulve iaingstructure is equipped with plows, each of which is composed of adepending member 51, which is secured by means of bolts 52, to one ofthe top bars 53, which connect the radial eye beam members upon whichthe pulverizing devices are movably-moun-ted, as heretofore explained.There are four frame parts 53, and as shown in the drawing, each ofthese parts forms one side of a square. There is a plow 51 attached tothe center of each of these frame parts 53, whereby there is a plowlocated intermediate each two pulverizlng members. Each of these plows,as

shown in the drawing, is equipped with a number of inclined blades 54,each of which has a threaded shank passing through the opening formed inthe depending member 51, nuts 56 being appliedto the stem on oppositesides of the said member, thus maintaining the blades exactly in place,their inclination being sutficient to cause the material to travelupwardly in the manner heretofore explained.

posed between the hub and the. said frame member. In order to increasethe wearing capacity of the engaged parts, the hub and stationary memberare equipped with steel plates 59 and 60 respectively, in which areformed races for the bearing balls 58. Inasmuch as the two hubs 6 and 28are rotated in opposite directions, the movement of the one upon theother is facilitated by the introduction of bearing balls-61, betweenthe two members, whose adjacent surfaces are provided with ball racesfor the purpose (see 1).

Secured to the top of the radial eye beams terial to be treate 29 is afunnel-shaped feed device 62, whose "er extremity is open to receive thematen-tel 'from'the feed pi e 63. The lower part ence to the verticalcenter of the feed device, to facilitate the distribution of thematerial as it is delivered to the mortar.

From "the foregoing description, the use and operation of my improvedpulverizing apparatus will be readily understood.

Assuming that the parts are assembled as shown in #Fig. 1 and thatmotion is communicated to the shaft 20, the mortar" and the rotarypulverizing structure will be rotated in opposite directions and atsuitable speeds for the pur ose required. The mais discharged from thefeed pipe 63 into the device (32, and falls upon the cone-shapedspreader or distributer 49, whence it passes to the mortar, and isthrown outwardly by centrifugal force, against the steel ring of thelatter.

Attention is called to the fact that the central opening formed in thevarious disksof each pulverizing member has its width so arranged as tofit closely two opposite sides of the stem 32, whereby the inner memberof each disk is prevented from rotating upon the stem. The outer faces,however, of these inner members are circular and the body members of thedisks may rotate thereon during the operation of the machine, thusfacilitating the crushing action, of the pulverizing members, andreducing the wear to which the disksof the said members would besubjected if they were stationary and only moved in their orbit oftravel around the center of the mortar. 'When the disks are constructed,as illustrated in the draw ing, heretofore described, each disk, inaddition to its orbital'travel, also has a rotary action around itsinner member, which is locked against rotation by the depending stem, asheretofore explained. As the pulf verizing structure rotates, thecarriages 30 In order to facilitate the rotary travel of the mortarhub-6 upon the stationary frame, or bed plate 57,ball bearings 58 areintertravel outwardly upon their eye beam supports under the action ofcentrifugal force, and the disks of which the various pulverizingmembers are composed, are independently acted upon by the same force,whereby the disks occupy positions unequally distant from the center ofthe mortar. As the lower disks act upon the relatively coarse material,these disks occupy positions farther away from the steel ring of themortar than the upper disks, (see Fig. 4). However, as the lower disksact upon the material, the. latter is gradually carried upwardly towardthe top of the mortar by the action of the blades 54 of the variousmembers, carried by the rotary pulverizing structure, whereby thematerial is successively acted upon by the various disks from the bottomtoward the top of each pnlverizing member, being finally dischar ed to aposition above the uppermost disc 33, of each pulverizing member. Asthis material is now very finely pulverized, being practically reducedto dust, it is removed from the mortar through the action of the suctionfan 16, heretofore described.

.\ttention is called to the fact that the depending stem 32. upon whichthe disks of each pulveriziug member are mounted, is provided at itslower extremity with a stop plate (35, which supports the plllVtllZlUgmember upon the stem. This plate has a width greater than the width ofthe open ings 4-7 in the disk. and therefore prevents the disks fromslipping off from the stem. In order that the suction may actadvantageously upon the pulverized material, after it passes upwardlyabove the mortar, a sort .of housing (36, is applied to the top of theeye beam structure, supporting the pulvcrlzmg members 33. This housingextends downwardly atthe outer ends of the eye beam members, nearly tothe top of the mortar, and as it is continuous with the outwardlyflanged lower member of the feed device 62, there isno opportunity forthe suction to. act upon the pulverized material eX- eept outside of thesaid housing, and through the space between the housing and thecone-shaped member 9, connected with the top of the mortar, hence thesuction acts directly upon the pulverized material as it leaves themortar, and there is no opportunity for the pulverized device tointerfere in any way with the passage of the material to be treated intothe mortar.

The two disk members 37, which are applied to the interior of the bodymember 34, as heretofore explained, are connected with each other byfastening screws 68, see Fig. (3. These screws are not shown in Fig. 5,since the suction is taken bet-ween the screws. see Fig. 6.

Having thus described my invention, what I claim is:

1. In apparatus of the class described, the combination of a mortar anda pulverizing structure mounted to rotate in the mortar, and equippedwith a number of horizontally disposed circularly arranged pulverizingmembers, aframe on which the said members are mounted to traveloutwardly under the action of centrifugal force, each pul vcrizingmember being composed of a munber of independently movable disks,whereby the various parts of each pulverizing member are allowedmovement upon the frame of the structure independently of a. pulverizingstructure mounted to rotate in the mortar and composed of pulverizingmembers suspended above the bottom of the mortar, and mounted to moveoutwardly on a track of the frame under the action of centrifugal force,each pulverizing member being composed of a number of horizontallydisposed disks, mounted to slide outwardly toward the pulverizing faceof the mortar, independently of each other, under the ac tion ofcentrifugal force, substantially as described.

3. In pulveriziug apparatus, the combination with a mortar, of apulverizing, structure mounted to rotate in the mortar, a frame equippedwith radially arranged arms, provided with depending stems adapted totravel, movably mounted on the arms, and a horizontally disposedpulverizing member mounted upon each stem, which passes through a.relatively large opening formed in the said'member, whereby the memberis allowed to move bodily outwardly upon its radial frame arm, under theaction of centrifugal force, each pulverizing member being composed of aseries of disks, independently movable upon the supporting stem, underthe action of centrifugal force, for the purpose set forth.

4. In pulverizing apparatus, the combination of a mortar, having avertically disposed, circularly arranged pulverizing face, and apulverizing structure, mounted to rotate and having its axis coincidentwith the axis of the mortar, the said structure con sisting of a framework, composed of arms radiating from the center, a carriage mounted totravel upon each arm and equipped with a depending stem, a pulverizingmember mounted upon each stem and composed of a number of disks arrangedone above another and in contact, the said disks being independentlymovable upon their support ing stem, under the action of centrifugalforce, substantially as described.

5. In pulverizing apparatus, the combination of a mortar, mounted torotate, a pulverizing structure mounted to rotate and having its axiscoincident with that of the mortar, the pulverizing face of the mortarbeing circular and vertical, the pulverizing structure consisting of aframe having radially disposed arms, carriages mounted to traveloutwardly on the arms, under the action of centrifugal force, eachcarriage having a depending stem, and pulverizing members, mounted uponthe said stems, each members being composed of a number of disks,mounted upon the stem, each disk having an opening through which thestem passes, the opening being sufficiently large in a radial directionto allow the disks to travel outwardly on the stem independently of eachother, fort-he purpose set forth.

6. In pulverizing apparatus, the combination of a mortar, mounted torotate and having a circularly arranged, vertically disposed pulverizingface, the bottom of the mortar, below the said face being beveled tofacilitate the outward and upward t'avel of the. material, a pulverizingstructure mounted to rotate on an axis coincident with the axis of themortar, the said structure being equipped with a number of pulverizingmembers, each movably mounted to travel outwardly, independently of theother, under the influence of centrifugal force, each pulverizing memberbeing suspended above the bottom of the mortar to allow the material fedto the mortar to pass outwardly under the said members, theframe of thestructure being equipped intermediate the pulverizing members, withplows, each composed of a number of inclined blades arranged one aboveanother, and means for rotating the mortar and pulvcrizing strum ture inopposite directions.

7. The combination of a mortar, mounted torotate, a pulverizingstructure composed of a frame work, and a number of depending members,movably mounted on the frame work to move outwardly under the action ofcentrifugal force, each member being composed of a number of distinctdisks movable independently of each other, under the action ofcentrifugalforce, the movemeat of the disks being in a radial direction,

a housing secured to the top of the mortar and rotatable therewith, afeed device mounted on the pulverizing structure, and adapted to receivxthe material to be treated, and deliver it to the mortar, thepulverizing structure being equipped below the feed device with aspreader or distributer for the said material, a stationary housingmounted on the frame work, above the mortar housing, and suctionapparatus connected with the stationary housing for removing thepulverized material, substantially as described.

S. A pulverizing member, composed of a stem or holder and a number ofdisks ar ranged one above airother and having openings fitting the stemon two opposite sides, but larger than the stem in one direction,whereby the disks are allowed to move on the stem, independently of eachother, each disk having a central member fitted to the stem to preventrotation, and a body member surrounding the central member and rotatablethereon. I

In testimony whereof I aflix my signature in presence of two witnesses.

ARVIN JAMES GORE. Witnesses A. E. OBnmN,

R. FERRY.

